If you have ever looked at two roulette tables and wondered why one has 0 and another has both 0 and 00, you have already found the biggest difference in European vs American roulette. That single extra pocket changes the math behind every bet, which is why the roulette house edge is typically much lower on European wheels.
This guide breaks down wheel layouts, probabilities, payouts, and the high-impact rules La Partage and En Prison. You will also get practical strategy and bankroll tips, plus a simple expected-loss calculator you can use in seconds.
Quick takeaway: European vs American roulette in one sentence
European roulette usually gives you better value because it has 37 pockets (0–36) and a lower house edge of about 2.70%, while American roulette has 38 pockets (0–36 plus 00) and a higher house edge of about 5.26%, even though the payouts look the same.
Rules and wheel comparison: the layout that changes everything
Roulette outcomes are determined by the number of pockets on the wheel. More pockets mean each specific number is less likely to hit, which increases the casino’s advantage when payouts stay fixed.
| Feature | European Roulette | American Roulette |
|---|---|---|
| Total pockets | 37 | 38 |
| Green pockets | 0 | 0 and 00 |
| Standard house edge (most bets) | 2.70% | 5.26% |
| Common special rules | Sometimes La Partage or En Prison | Less common |
| Typical player value | Better odds and lower long-run expected loss | Higher volatility and higher long-run expected loss |
Both versions use the same basic roulette bets (inside bets like straight-up and splits, and outside bets like red/black). The key point is that the payout schedule is usually identical across both versions, so the game with fewer pockets generally offers better expected value.
Probability and payout examples (why the house edge changes)
Roulette payouts are designed around a 36-number game, but modern wheels include green pocket(s). Because the payout does not fully compensate for that added green pocket probability, the casino retains an edge.
Example 1: Straight-up bet (single number) pays 35:1
- European roulette: probability of winning is 1 / 37 (about 2.70%).
- American roulette: probability of winning is 1 / 38 (about 2.63%).
Assume you bet 1 unit on a single number:
- If you win, profit is +35 units (you also get your original bet back, but profit is what matters for expectation).
- If you lose, profit is -1 unit.
Expected value (EV) is:
EV = (win probability × win profit) + (lose probability × loss)
- European EV: (1/37 × 35) + (36/37 × -1) = -1/37 ≈-2.70%
- American EV: (1/38 × 35) + (37/38 × -1) = -2/38 ≈-5.26%
That is why the roulette house edge roughly doubles from European to American, even with the same 35:1 payout.
Example 2: Red / Black (even-money) pays 1:1
On both wheels, there are 18 red, 18 black, and green pocket(s). If you bet 1 unit on red:
- European: win probability 18/37, lose probability 19/37 (because 0 loses). EV = (18/37 × 1) + (19/37 × -1) = -1/37 ≈-2.70%
- American: win probability 18/38, lose probability 20/38 (0 and 00 lose). EV = (18/38 × 1) + (20/38 × -1) = -2/38 ≈-5.26%
Same payout, different wheel, different long-run value. This is the core of European vs American roulette from an odds perspective.
La Partage and En Prison: the best rules to look for on European tables
Some European roulette tables add rules that improve player value on even-money bets (red/black, odd/even, high/low). These rules do not usually apply to dozens, columns, or inside bets.
La Partage: “half back” on zero
With La Partage, if you place an even-money bet and the ball lands on 0, you lose only half of your stake instead of the full amount.
Why that matters: the only “extra” losing outcome beyond the 18 opposite-color numbers is the single zero. Losing only half on that one outcome cuts the effective house edge on even-money bets to about 1.35% (half of 2.70%).
En Prison: “in prison” for one spin
With En Prison, if you make an even-money bet and the ball lands on 0, your bet is not immediately lost. Instead, it is “imprisoned” for the next spin:
- If your even-money outcome hits on the next spin, you get your stake back (typically no profit).
- If it loses again, you lose the stake.
- If 0 hits again, table rules can vary, but the practical effect for players is similar to La Partage in terms of expected value.
Like La Partage, En Prison commonly brings the effective edge on even-money bets down to about 1.35% under standard conditions.
What this means for “which roulette is better”
- If you enjoy outside bets and steadier swings, European roulette with La Partage or En Prison is often the best-value version you will find.
- If those rules are not offered, standard European roulette is still typically better than American roulette because of the single zero.
Wheel sequence: does the number order matter?
Another difference you might notice is the sequence of numbers around the wheel. European and American wheels commonly use different arrangements. Practically, for a fair wheel and random spins, the sequence does not change the mathematical house edge, because each pocket remains equally likely.
Where it can matter for players is more about experience than expectation:
- Some players feel certain layouts are easier to track visually for neighbor bets.
- The presence of 00 on American wheels can make losing streaks on some bet types feel sharper because there is one more green-pocket losing outcome.
The biggest, reliable driver of value remains: how many green pockets exist, and whether special rules reduce losses on zero.
Volatility and bankroll impact: how the extra 00 changes your long run
When the house edge increases, two things typically happen from a player perspective:
- Your expected loss per hour rises for the same bet size and number of spins.
- Your bankroll tends to swing downward faster over long sessions, even if the short-term variance feels similar.
This is why American roulette can feel more “expensive” over time, even though the table looks almost identical.
Expected loss comparison (simple examples)
Expected loss is not a prediction of what will happen in one session, but it is a useful way to compare games.
| Game / rule set | Typical house edge | Expected loss on 1 unit per spin over 100 spins |
|---|---|---|
| European roulette (standard) | 2.70% | 2.70 units |
| European roulette (even-money with La Partage or En Prison) | 1.35% (even-money bets) | 1.35 units |
| American roulette (standard) | 5.26% | 5.26 units |
Notice how the difference is meaningful even in a short, simple 100-spin comparison. Over longer play, the gap becomes more noticeable.
A simple roulette house edge calculator (use this before you play)
You do not need a complex spreadsheet to compare tables. You can estimate your expected loss using a quick formula.
Step-by-step formula
Expected Loss = Average Bet × Number of Spins × House EdgeWhere:
- Average Bet is how much you typically stake per spin (in your currency).
- Number of Spins is how many spins you expect to play.
- House Edge is a decimal (2.70% = 0.027, 5.26% = 0.0526, 1.35% = 0.0135).
Worked examples
If you bet 10 per spin for 200 spins:
- European standard: 10 × 200 × 0.027 =54 expected loss
- American standard: 10 × 200 × 0.0526 =105.2 expected loss
If you play even-money bets on a European table with La Partage or En Prison:
- European with La Partage / En Prison (even-money): 10 × 200 × 0.0135 =27 expected loss
This is one of the clearest ways to answer which roulette is better for value: the version with the lowest edge gives you more entertainment time per unit wagered on average.
Strategy and bankroll tips that actually help (without pretending to “beat” roulette)
Roulette is a negative-expected-value game in the long run, which means no betting pattern changes the underlying math. The best “strategy” is choosing rules that reduce the edge and managing your bankroll so you get maximum enjoyment and control.
1) Choose single-zero roulette whenever possible
- Prefer European roulette (one zero) over American roulette (zero and double zero).
- If you see an online lobby with multiple roulette versions, selecting the single-zero table is one of the highest-impact decisions you can make.
2) Actively look for La Partage or En Prison if you like outside bets
- If your play style is heavy on red/black or odd/even, these rules can reduce the effective edge to about 1.35% on those bets.
- That difference can noticeably stretch your bankroll and smooth the cost of long sessions.
3) Check table rules before you sit down (or before you click “Join”)
Small rule details can matter. Before you commit, confirm:
- Whether the game is European, American, or sometimes French roulette (often European-style with La Partage / En Prison).
- Whether La Partage or En Prison is listed for even-money bets.
- Minimum and maximum bets, so your bankroll fits comfortably.
4) Use bankroll guardrails to keep the session fun
- Set a session budget you are comfortable spending for entertainment.
- Pick a base bet size that lets you play many spins (more spins usually means more entertainment per trip).
- Consider stop points: a time limit, a win goal, and a loss limit.
5) Keep expectations realistic and focus on value
What skilled players do best in roulette is not “predict the wheel,” but consistently pick better-value tables and avoid rule sets that quietly double the cost of play.
Availability: where you are more likely to find European vs American roulette
Availability depends on venue and region, but a few general patterns are common:
Land-based casinos
- European roulette is more common in many European venues.
- American roulette is frequently found in the United States and in some international casinos that cater to American-style gaming.
- High-traffic casino floors may offer both, so it pays to confirm the wheel layout before buying in.
Online casinos
- Online platforms often provide multiple roulette variants side-by-side, making it easier to choose based on house edge and other games like blackjack online.
- Live dealer sections may offer both European and American tables, sometimes with clearly labeled rules such as La Partage.
The practical benefit online is speed and choice: you can compare rule cards quickly and select the version with the best value for your style.
European vs American roulette: a simple “which should I play?” decision guide
- If your goal is better odds and a lower long-run cost: choose European roulette.
- If you can access it and you enjoy even-money bets: choose European roulette with La Partage or En Prison for an even lower effective edge on those wagers.
- If you are playing for tradition or the classic US layout experience: American roulette can still be fun, but it is usually the higher-edge option, so it is smart to size bets accordingly.
FAQ: common questions about roulette house edge and table choice
Is European roulette always better?
In terms of expected value, single-zero European roulette is typically better than double-zero American roulette because the house edge is lower (about 2.70% vs about 5.26%).
Do payouts differ between European and American roulette?
Most standard payouts are the same (for example, straight-up bets typically pay 35:1 in both). The difference is that American roulette adds the 00 pocket, making wins slightly less likely without increasing payouts.
Do La Partage and En Prison reduce the house edge on all bets?
They mainly affect even-money bets. On those bets, they can reduce the effective house edge to about 1.35%. Other bet types generally keep the standard European edge.
Can any betting system overcome the roulette house edge?
No betting system changes the underlying probabilities of the wheel. What you can do is improve value by selecting lower-edge tables and using bankroll rules that fit your entertainment goals.
Bottom line: the best-value choice is usually clear
When comparing European vs American roulette, the advantage goes to the game with fewer green pockets.European roulette (single zero) generally offers a noticeably better roulette house edge than American roulette (zero and double zero). If you can find La Partage or En Prison, even-money bets become even more player-friendly by reducing the effective edge to around 1.35%.
If you want the most value from every spin, make the high-impact move: choose single-zero tables, verify the rules, and bet with a bankroll plan that keeps the session enjoyable.
